WPS has been working with the Peregrine nesting efforts since 1996 in hopes of helping bring back this endangered bird of prey to Wisconsin.

Pulliam Power Plant

High above the place where the Fox River meets the bay of Green Bay, nestled in the southeast corner of the roof of our J.P. Pulliam Power Plant, you will find a specially built home designed for the rare Peregrine Falcon. This unlikely spot has produced over 56 Peregrine chicks since 1996. The birds are attracted to power plants because of their tall stacks, their proximity to open water and the steady food supply of other birds in the area.

Weston Power Plant

In 2006, for the first time in Marathon County, four Peregrines were hatched atop our Weston Power Plant in Rothschild, WI. WPS employees have been trying to attract the Peregrines to nest at the plant. Since 2006, a total of 20 Peregrine chicks have hatched atop the Weston Power Plant.


The Peregrine Falcon is a crow-sized bird of prey that is famous and admired for its beauty, speed and agility. Native to Wisconsin, Peregrines originally nested along the bluffs of the Mississippi, St. Croix and Wisconsin rivers, and along the Door peninsula.

The population withered because of the use of the chemical pesticide DDT which weakened eggshells and prevented hatching. As a result, Peregrines disappeared from the entire eastern United States and were placed on the endangered species list.

The Wisconsin Peregrine Trust's goal is to establish 20 nesting pairs, which would enable the population to sustain itself in the state. The Trust hopes that the Peregrines can be restored to the natural cliffs and rocky bluffs along the Mississippi River in western Wisconsin and also along the Door County peninsula. WPS through its Foundation provided a grant to The Wisconsin Peregrine Trust in 2004 to assist with this effort.